How to Increase DPI When Scanning a Document

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DPI stands for dots per inch, and the number of dots per inch indicates the resolution of an image. A higher DPI indicates higher image resolution. You’ll need a DPI of 300 or greater to print enlargements of images or to project them onto a large screen. When you scan a document, whether or not it includes pictures, you’ll still need a high resolution for enlargements or projections. Most scanners and scanning software use a default DPI setting of 72 DPI, a resolution that suffices for simple web use or emailing, but not for enlargements. You can increase the DPI of a scanned document if you need to.

  • Turn on your scanner and open Adobe Photoshop or other design and scanning software.

  • Go to the “File” menu and select “Import” and then “From Scanner,” or choose the name of your particular scanner, such as “HP Scanjet G4050” or “Epson V500.” A new window will open.

  • Specify the kind of document you are scanning (color, black and white, or text only) and select a file format for the scanned document. For higher image quality, choose TIF (Tagged Image File).

  • Select your desired image DPI. There is an upper limit, but many scanners today can support DPI resolutions over 1,000.

  • Click “Preview,” and the scanner will generate a preview scan, allowing you to see if the DPI you selected yields a high enough resolution. Make changes if necessary, and then click “Scan” to scan the document.

References

  • Photo Credit Hemera Technologies/AbleStock.com/Getty Images
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